33. Detect Circular Pattern Match

#include <stdio.h>
#include <stdint.h>

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    // Your code here
    for (int i = 0; i < 16; ++i) {
        if (reg == target) return 1;
        
        if (reg & 0x8000) {
            reg <<= 1;
            reg |= 1;
        } else {
            reg <<= 1;
        }
    }
    return 0;
}

int main() {
    uint16_t reg, target;
    scanf("%hu %hu", &reg, &target);
    printf("%hhu", is_circular_match(reg, target));
    return 0;
}